Top Definition
Somebody who is all out awesome and portrays a certain image that is accepted through certain groups, cults; etc.
"I love you! You're so radtastical!."
ayon kay Samantha Sadler ika-05 ng Marso, 2006
(adj.) a word that describes something that is so far beyond amazing that this is the only word to describe it.
Teacher: Does anyone know what the synonym for-


Teacher: No, Jack. And you really should really start raising your hand-

Jack: -BUT, I DO!

Teacher: Yes, Jack. AS you're blurting out what you have to say. So does anyone know the synonym for- oh- I guess you're right, Jack.

ayon kay bleyw&trippy ika-08 ng Enero, 2010
Amazing, radical, the greatest
That movie is radtastical.
ayon kay MacAttack ika-04 ng Mayo, 2005
Fantastically Rad.

To exhibit behavior, actions, or state of being in a nature that intertwines traits that would be considered 'fantastical' and 'rad' simultaneously.
The artist's imaginative creations made under the influence of psychedelics were so astonishingly mind blowing, they could only b described as radtastical.

The steam punk space skate opera combined the art of gnarly grinds and other various rad skating techniques with a fantastical atmosphere, compelling story, and an epic sound track; in a way thats won the hearts of the critics as they describe it as "A radtastical ride!"

Fantasy Man, from Noel Fielding's Luxury Comedy, is the most Radtastical fictional Character ever conceived.
ayon kay SilverHammer27 ika-05 ng Setyembre, 2015

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